US and Russia meet for talks on their last major nuclear weapons agreement.
China says it is “firmly opposed” to the US defence department’s Nuclear Posture Review’s new nuclear weapons policy statement.
Four men are tried for selling two litres of a liquid used to produce chemical and nuclear weapons for $3.3 million.
North Korea successfully tests the highest and longest new intercontinental ballistic missile landing in the sea near Japan.
Air China Ltd suspends flights between Beijing and Pyongyang as North Korea faces growing sanctions from the US.
Information on North Korea is often difficult to obtain, analysts say it is too soon to draw any firm conclusions from the unspecified punishments.
South Korean President Moon Jae-in says it would not be easy for North Korea to destroy its nuclear arsenal quickly.
Donald Trump arrives in China seeking help to rein in North Korea.
North Korea’s leader Kim Jong-un says his nuclear weapons were a “powerful deterrent” that guaranteed its sovereignty.
North Korea threatens to “sink” Japan and reduce United States to “ashes”.
Amid uproar over its weapons test, North Korea ready to send “more gift packages”.
North Korea to face a diplomatic barrage for its nuclear programme.